/*
 * Copyright 2001-2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package samples.userguide.example4;

import org.apache.axis.AxisFault;
import org.apache.axis.Handler;
import org.apache.axis.MessageContext;
import org.apache.axis.handlers.BasicHandler;

import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.util.Date;

public class LogHandler extends BasicHandler {
	public void invoke(MessageContext msgContext) throws AxisFault {
		/**
		 * Log an access each time we get invoked.
		 */
		try {
			Handler serviceHandler = msgContext.getService();
			String filename = (String) getOption("filename");
			if ((filename == null) || (filename.equals("")))
				throw new AxisFault("Server.NoLogFile",
						"No log file configured for the LogHandler!", null,
						null);
			FileOutputStream fos = new FileOutputStream(filename, true);

			PrintWriter writer = new PrintWriter(fos);

			Integer numAccesses = (Integer) serviceHandler
					.getOption("accesses");
			if (numAccesses == null)
				numAccesses = new Integer(0);

			numAccesses = new Integer(numAccesses.intValue() + 1);

			Date date = new Date();
			String result = date + ": service " + msgContext.getTargetService()
					+ " accessed " + numAccesses + " time(s).";
			serviceHandler.setOption("accesses", numAccesses);

			writer.println(result);

			writer.close();
		} catch (Exception e) {
			throw AxisFault.makeFault(e);
		}
	}
}
